Gun-shield.



No. 811,715. PATENTED FEB. 6,.1906. R. A. HADFIELD-&- A. G. M. JACK.

GUN SHIELD;

APPLICATION FILED APRJB. 1905. 1

WWIKMW.

- a To all whom it maty concern:

PATENT oF IoE,

;'lidiaEiirrfgfi-ien'riitrn AND ALEXANDER G. M. JACK, oE SHEFFIELD, ENGLAND.

GUN-SHIELD.

"Be'ifiknowmthat we, ROBERT A. HAD- FI'ELi) and ALEXANDER, G. lVltJACK, subjects of the'King of Great Britain, and residents of Sheffield, county f Yo"r-k, England, have invented-an Improvement in Gun-Shields, of

which; the following description, in "connec tion 'with tlre: accompanying drawings, is a V: specificat on, like numerals on the drawings representing like-parts.

-,This in;vention=has for its object the pro (luc-tion'-'of rarr'impro-ved gun-shield whereby we areenabled to dispense with the bending to form', "cutti'ng "out port holes, general bringing into -'shape,': and securing attachmentsin' place, as involved in the present manufacture of gun-shields.

-- By' means 'of our inventionwe are enabled to produce atcomparatively moderate cost gun-shields better adapted to withstand the thicknessas heretofore constructed, 1 In accordance w th our'invention we constructa mold; having 1nternally,the forma- 'tion and coirtourof the finished shield to be produced with its slot-like gun-aperture and attachments, such as brackets and other parts, for securing into'fpositionthe shield. We then pour into the mold molten steelsuch, for example, as nickel-chromium steel of thecharacter specified in British Patent No. 16,132 of 1901.

The shield is preferably made of a partlyspherical or dished shape with its sides extended as may be required to suit the design of gun-mount with which it is to be used, Theupper part or roof and the sides of the shield are entirelyclosed in, the bottom and rear en'd being open and substantially U- shaped to accommodate the gun. The aperture in the centralfront portion of the shield through which the gun is to project is made in the form of an elongated upright slot'of suflicientlength to permit the necessary ele-- vation and depression of the gun, and one or more additional and similar apertures may be made for sighting purposes. The metal around such an aperture may be strengthened or reinforcedby thickening the same around the edges of the aperture to form a beading, both internallyand externally, if

necessary. v

' Our improved shield maybe of substantially uniform thickness throughout; but

Patented Feb. 6, 190a.

preferably the central front portion thereof is of maximum thickness. where the shield is liable to be subjected to the direct impact of projectiles and to compensate for the reduction in'strength due to the gun and sightapertures, either or both. The roofand side portions of the shield, respectively above and at the rear of the central front portion and integral therewith and curving or sloping therefrom, may be of gradually-decreasing" thickness, inasmuch as suchportions being subject mainly to glancing blows of projectiles impinging thereon are not so liable to be penetrated as the central front portionQ .The gun-shield constructed in accordance with our invention maybe annealed or toughened and hardened in any suitable or known way-as, for example, in the manner described in one or the other of British Patents- Nos. 16,131 and 16,133, both of 1901, for the purpose of increasing the resistance of the shield to penetration by projectiles. So, too, the outer surface of the shield maybe cemented in any of the well-known ways adapted for hardening armor-plates.

4 In the accompanying drawings, Figure 1 is acentral vertical section of a gun-shield embodying our invention on the line 1 1, Fig. 2. Fig. 2 is a top plan view of the shield. Fig. 3 is a transverse section thereof on the line 3 4, Fig. '1, looking toward the left; and Fig. 4 is a section on the same line 3 4, but looking toward the right.

As will be seen by reference to the drawings, the shield is of a partly-spherical or dished shape in general, open at the bottom and at the rear, the said openings being substantially U-shaped. The shield comprises an inclined and transversel conveX cent al front portion 1, in which is ormed a gun-aperture 2 and one or more sight-openings 3, with a convex, overhanging, or closed-in por-' tion 4 and inclined or sloping sides 5, the roof and sides forming integral extensions of'the centr'al therewit preferably of nickel -chromium steel, as hereinbefore referred to. The whole external surface of the shield is inclined with relation to both the vertical and the horizontal to thereby form a very efiective protection to the gun with which the shield is used and to the gun crew.

ortion 1 and being cast integral- We prefer tamake the shield of maximum thickness atthe central front portion, as

shown, and to gradually decrease the thickness of the shield in an upward and lateral diact that the shield is produced by casting.

' thickened to form a beading, as'6.

The gun and sight, apertures 2 and 3 are made, preferably, in the form of elongated slots, and in or er to strengthen or reinforce the metal adjacent thereto we have shown the metal around the edges of the aperture beading is shown on the internal and external surfaces of the shield, (see Fig. 1,) and the rear edge of the shield is similarly strengthened or reinforced by a beading, as 7. The

dotted lines 8 in Figs. 1 and 2 indicate a por tion of a 11 within the shield.

Suitab' e attachments, such as brackets or other parts 9, for securing the shield to the n-carriage and for other purposes may be ormed integral with the shield at the desired points thereof to suit varying requirements.

It willbe understood b those skilled in the art that the sides will lie rearwardly extended, as desired, to accord with the par ticular structure of the gun or un-mount with which the shield is to be used.

Having fully described our invention, what we claim as new, and desire tosecure by Letters Patent, is V p 1 1. A cast-steel gun-shield comprising an inclined and transverselyconvex central front portion and curved or sloping extensions at the sides and top thereof and integral therewith formin the sides and roof, respectively, of the shie d and presenting a smooth external surface, the front portion having an upright, elongated gun-aperture formed.

therein;

This

said front portion.

2. A cast-steel gunshield,having its front tion and integral extensions thereof forming the roof and sides of the'shield, and an integral reinforce along the rear edge of the shield.

5. A one: piece cast-steel gun -shield of partly spherical or dished shape, with roof and sides integral with and curved. or sloping from the central front portion, and presenting a smooth external surface, a slot or window-like aperture for a gun .being formed in 6. A one-piece cast-steel gun-shield of partly-spherical or dished shape, having an apertured, inclined central front portion of maximum thickness from the base upward and curved. or sloping extensions integral therewith constitutm the roof and sides and gradually decreasing 1n thickness toward the open rear end of the shield.

In testimony whereof we have signed our names to this specification in the presence of two subscribin witnesses.

' R BERT A. HADFIELD.

ALEXANDER G. M. JACK. Witnesses:

G. H. HEMsoLL', ERNEST; Roncnas'. 

